AAS 195th Meeting, January 2000
Session 114. Robotic Telescopes
Display, Saturday, January 15, 2000, 9:20am-4:00pm, Grand Hall

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[114.02] ROTSE All-sky Surveys for Variable Stars: 2000 New Variable Stars Brighter than V=15

T. McKay, C. Akerlof, S. Amrose, R. Kehoe, A. Pawl, J. Schaefer (University of Michigan), R. Balsano, J. Bloch, D. Casperson, S. Fletcher, G. Gisler, J. Hills, J. Szymanski, J. Wren (Los Alamos National Lab), S. Marshall (Lawrence Livermore National Lab), B. Lee (Fermi National Accelerator Laboratory), ROTSE Collaboration

ROTSE-I is a small, fully robotic, telescope with a 16 degree by 16 degree field of view. In addition to observing optical bursts associated with GRBs, ROTSE-I regularly patrols the night sky. It obtains images of the entire visible sky for two epochs every night. This data has been obtained continuously since March 1998, and now includes 2.5 Terabytes of data ideally suited for identification of bright variable stars.

We have recently completed analysis of 6% of the ROTSE-I sky coverage. In these 2000 square degrees we identify 1950 periodic variable stars, 90% of which are new. The brightest of these have mean magnitudes of mv=9.5 and the faintest mv=15.5. Essentially all types of variables are found, including large new samples of RR Lyraes, Contact Binaries, Eclipsing systems, Cepheids, Delta Scuti stars, and long period variables. Most of these objects are useful for studies of galactic structure. These initial results demonstrate that the full ROTSE-I variable catalog will include about 30,000 variable stars, with uniform coverage of the full sky north of -30 degrees dec.

ROTSE is supported by NASA, the NSF, the University of Michigan, and Los Alamos National Lab.

If you would like more information about this abstract, please follow the link to http://www.umich.edu/~rotse. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: tamckay@umich.edu

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